Used on c135f hercules aircraft. 3a thread class right-hand 0.250" thread length 40 thread quantity per inch 160 T0 190 ksi ftu precipitation hardening per AMS5853 unjc thread series
Used on c135f hercules aircraft. 3a thread class right-hand 0.1380" thread length 32 thread quantity per inch screw, machine pan head close tol, short thd, offset cruciform 160000 psi uts min. at room temperature heat treatment passivate surface treated unjc thread series